Wear Resistant Coatings For Radial Bearings and Downhole Tools

摘要

Abrasion resistant coatings useful for improving abrasive wear and/or corrosion resistance in radial bearings and downhole tools exposed to drilling forces as well as abrasive and/or corrosive drilling fluids. An abrasion resistant coating is disposed on at least one surface of a component body to increase the resistance of the component to abrasive wear and corrosion. The abrasion resistant coating includes a plurality of spherical tungsten cobalt carbide particles and a plurality of tungsten carbide particles. At least 65% by volume of the spherical tungsten cobalt carbide particles have a diameter of less than about 25 microns.

主权项

1. A downhole component, comprising:
a component body having at least one surface; and an abrasion resistant coating disposed on the at least one surface of the component body, the abrasion resistant coating including a plurality of spherical tungsten cobalt carbide particles and a plurality of tungsten carbide particles; wherein at least 65% by volume of the spherical tungsten cobalt carbide particles have a diameter of less than about 25 microns.